tril·​lion | \ ˈtri(l)-yən How to pronounce trillion (audio) \

Definition of trillion

1 : a number equal to 1,000 times one billion — see Table of Numbers
2 : an indeterminately large number a trillion mosquitoes out tonight

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Other Words from trillion

trillion adjective
trillionth \ ˈtri(l)-​yən(t)th How to pronounce trillionth (audio) \ adjective or noun

Examples of trillion in a Sentence

Recent Examples on the Web

Fed officials bought trillions of dollars’ worth of Treasury and mortgage-backed... David Harrison, WSJ, "Trump Calls on Fed to Cut Interest Rates, Resume Bond-Buying to Stimulate Growth," 5 Apr. 2019 The advance is a marked turnaround from the final months of 2018, when tumbling technology shares wiped out trillions... Akane Otani, WSJ, "How Big Tech Has Powered Global Stocks," 10 Mar. 2019 Your laptop or desktop is likely capable of several teraflops, or trillions of calculations per second. Avery Thompson, Popular Mechanics, "The U.S. Will Get the World's First Exascale Computer in 2021," 20 Mar. 2019 Apple announced on Wednesday plans to repatriate its nearly quarter-trillion in overseas cash. Don Reisinger, Fortune, "Here Are the Companies Apple Could Acquire With Its Cash Hoard," 18 Jan. 2018 Moving 70 million people out of poverty will require a complete overhaul of its entire social welfare system as well as trillions in new debt., "China's war on poverty could hurt the poor most," 9 Jan. 2018 Currently banks with just over $50bn come under much the same regime as those with trillions, even though larger institutions tend to have more varied business and thus merit more scrutiny. The Economist, "Small changeAn attempt to revise the Dodd-Frank Act reaches a milestone," 8 Mar. 2018 Those trillions of dollars and wealth creation begin to finally move into the middle class and workers. Eric Johnson, Recode, "Tesla’s board is too weak to stop its CEO Elon Musk from tweeting," 5 Oct. 2018 Auto makers and tech companies are betting new services that will grow out of the effort will eventually generate hundreds of billions or even trillions of dollars in revenue. Mike Colias, WSJ, "GM President Dan Ammann to Take New Role as Head of Autonomous-Car Business," 29 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trillion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of trillion

1690, in the meaning defined at sense 1

History and Etymology for trillion

French, from tri- + -illion (as in million)

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Statistics for trillion

Last Updated

12 May 2019

Look-up Popularity

Time Traveler for trillion

The first known use of trillion was in 1690

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More Definitions for trillion



English Language Learners Definition of trillion

: the number 1,000,000,000,000 : one thousand billion
: a very large amount or number
British, old-fashioned : the number 1,000,000,000,000,000,000 : one million million million


tril·​lion | \ ˈtril-yən How to pronounce trillion (audio) \

Kids Definition of trillion

: a thousand billions

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More from Merriam-Webster on trillion

Rhyming Dictionary: Words that rhyme with trillion

Spanish Central: Translation of trillion

Nglish: Translation of trillion for Spanish Speakers

Britannica English: Translation of trillion for Arabic Speakers

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